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help to design a signal divider analog circ

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ashade

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Hey, I'm a 3rd year student of electronics and I need help to design a circuit that receives a sinal V0 with respect to the ground and outputs:
1) V0 in pin A and 0 (zero) in pin B, if V0>=0;
2) 0 (zero) in pin A and V0 in pin B, if V0<0;

Any ideas how to implement this circuit?
 

Had you tryied using two analog mux, so the problem could result in polarity detection, and you can use a voltage comparator or an opamp for that.

Good luck
 

Use two half wave rectifiers with opamps. You can find the circuit in Application Note 31 from National Semiconductors page 17
**broken link removed**
If you reverse the polarity of the diodes you get the oposite polarity rectifier.
 

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